Sizing tube



Feb. 13, 1951 P,G HENDREX 2,541,9 3

SIZING TUBE 4 Sheets-Sheet 1 Filed March 25, 1'549 INVENTOR: puma?ONE/wax.

ATTORNEY P. G. HENDRIX Feb. 13, 1951 SIZING TUBE 4 Sheets-Sheet 2 FiledMarch 25, 1949 PAH/25E 6- Hawk/x,

IN VEN TOR.

A TTORNES.

,1951 P. G. HENDREX 29 9 SIZING TUBE Filed March 25,1949 4 Sheets-Sheet3 443 w; 54 L w ALMf/Z 6- Ala/02m,

IN V EN TOR.

ATTORX/EY Feb, 13, 1951 P. G. HENDRIX 2541,93

- SIZING TUBE Filed March 25, 1949 4 Sheets-Sheet 4 IN VEN TOR: Rum-p 6.l/ENDR/X.

Patented Feb. 13, 1951 SIZING TUBE Palmer G. Hendrix, Hickory, N. 0.,assignor to Hickory Specialty Company, Hickory, N. 0., a corporation ofNew Jersey s,

Application March 25, 1949, Serial No. 83,323

9 Claims.

This invention relates to an improved winding or sizing tube forsynthetic yarns, such as nylon and Vinyon, and onto which the syntheticyarn is wound after having beentreated with a sizing emulsion.

Sizing emulsion is usually applied to synthetic yarns, such as nylon, asit is wound from pirns, bobbins or the like, onto a sizing tube which isusually of plastic material and is about six inches in diameter andseven inches long. The yarn is usually wound onto the sizing tube on awinding machine such as a Foster winder, and such as is shown in thepatent to J. O. McKean Number 1,647,534 of November 1, 1927. As the yarnpasses from the pirn to the sizing tube, it passes over a rotatingemulsion roller which is partially submerged in a sizing emulsioncarried bya reservoir supported on one side of the machine. The sizintube is mounted on a rotating spindle on which the tube is usually heldby expanded continuous coiled springs bearing against the internal wallof the sizing tube. Now, in order to remove the sizing tube from thespindle, the continuous coiled springs are allowed to contract slightlyto there by permit the operator to slide the sizing tube off thespindle.

After the yarn has been subjected to the sizing emulsion and has beenwound onto the sizing tube, the sizing tube is then placed in an ovenwhere it is subjected to elevated temperatures at relatively highhumidity to thereby allow 9. limited amount of shrinkage or contractionof the yarn on the sizing tube.

It is an object of this invention to provide a sizing tube which isdesigned to retain its diameter during the winding operation whileapplying sizin emulsion to the yarn and to provide means for allowingthe tube to collapse or contract a predetermined amount, therebydecreasing its diameter, while the yarn wound thereon shrinks orcontracts a predetermined amount, to thus increase the elasticity of thenylon yarn as well as to provide a uniform amount of elasticity in thesynthetic yarn wound on a particular tube.

It is another object of this invention to provide a sizing tube of thetype described having a slot of predetermined width extending throughoutthe length of the tube and to provide locking means at each end of theslot connected to the tube to normally prevent the slot from closingwhen under tension of the synthetic yarn being wound thereon during awinding and sizing operation. After the tube with the treated yarnthereon is removed from the winding machine,

Other means are provided to prevent the opposite walls of the slot fromengaging each other upon the yarn contracting on the tube to thereby notonly cause a predetermined amount of contraction of the yarn to takeplace, but also preventing the yarn from bein pinched between the wallsof the slot in the tube.

V Someof the objects of the invention having been stated, other objectswill appear as the description proceeds when taken in connection withthe accompanying drawings, in which Figure 1 is an isometric view of theimproved sizing tube showing-the locking means holding the walls of thelongitudinal slot apart from each other;

Figure 2 is an enlarged vertical sectional view taken along the line 22in Figure 1:

Figure 3 is an enlarged sectionaltplan view taken along the line 33 inFigure 1;

Figure 4 is a transverse sectional view taken along the line 4-4 inFigure 1 and showing some of the nylonv yarn wound thereon with part ofthe yarn being broken away for purposes of clarity;

Figure 5 is an elevation of the sizing tube with the nylon yarn woundthereon and showing the locking means released and in the position itwill assume when the yarn has contracted to about one half of its limit;

Fi ure 6 is an enlarged elevation of the upper central portions ofFigures'l and 4 and showing the locking means in the position it willassume when'the yarn on the tube will have contracted to its limit;

Figure 7 is an elevation of another form of the sizing tube with amodified form of locking and guiding means applied thereto;

Figure 8 is an enlarged transverse sectional view taken substantiallyalong theline 8-8 in Figure 7;

Figure 9 is an enlarged plan view taken substantially along the line9--9 in Figure '7 and showing a detail of the modified locking means;

Figure 10 is an enlarged elevation looking at the inner side of the tubeat the upper portion of Figure and also being taken substantially alongthe line Ill-J0 in Figure 9;

Figure 11 is another form of the invention wherein the modified form ofguiding means, heretofore referred to, is employed along with a hingedspacer for closing the slot and preventing the locking means at the endsof the slot may be released and the slot in the tube may bepercontraction of the tube during the winding operation; s Figure 12 isan enlarged transverse sectional view taken substantially along the linel2l2 in Figure 11;

Figure 13 is a sectional view similar to Figure 12 but showing theclosing member or spacer swung inwardly;

Figure 14 is a top plan view of the tube shown inFigure 1; r

Figure 15 is an enlarged elevation looking at the inside of the tube andat the opposite side from that shown in Figure 11 and is takensubstantially along the line ll 5 in Figure 14.

Referring more specifically to the drawings, the numeral iii indicates asizing tube which may be of any desired material, such as laminatedplastic, molded plastic, wood, or any other "contractabl-e material. Thetube ii? has a .slot

Tof predetermined width extending throughout the length of the tube. Theslot is defined by walls l2 and it which are representative of the Widthof the slot and their distance apart may be varied according to thepercentage of elasticity desired in the sized yarn.

A locking member "IE5 is pivotally co'nnectedas by a pin it to thetubular member l-Ei adjacent the wall i2 at the upper end of the slot'H. A

similar locking member I5 is mounted at the other "end of the slot H,and since the locking members i5 and iii are identical, the partsassociated 'with'the locking member will'bear the same referencecharacters as like parts associated with the locking member IE, with theprime notation added.

The locking member 15 "is preferably U-shaped in cross section and itsleft-hand portion in Figure l is adapted to slidably engage theupperedge of the tubular member if). It willbe noted in Figure ethat thelocking member 2 5 is also curved to "conform, 'geh'er'allypto thecurvature of the 'innerand outer walls oi" the'tube it. Thus, themember[5 not only serves as a locking means but also serves as a guide memberto insure that the walls 12 and '53 are properly alined asthey 'movetoward each other with contraction of the tube it as will'be laterdescribed.

A pin 28 is fixedly mounted in'the locking member i5, as by a pressedfit, 'and'spansthe distance between the flange or leg portions of the U-shap'ed member i5.

The flanges of the U-shaped member 15 are provided with a plurality ofspaced sets of alined bores t9. which are adapted to snugly receive asecond pin it, similar to pin 23'. The pin 2! may be inserted in any oneofthe sets'of alined bores H3 in the member l5 according to the amountthat it is desired the yarn'shall "contract on the tube 15. It will benoted that 'the bores iii are positioned inwardly relative to the pivotpin it toward the opposite end of the tubular member it! so as toposition the pin 2! inwardly when inserted in the bores I53, forpurposes to be later described. The locking membenifi has a cut awayportion 23 at 'its right-hand end in Figure 1 to thus permit the lockingmember 15 to be moved in a clockwise direction in Figure l to "theposition shown in Figure 5. I

As the yarn is passed through a sizing emulsion and during a windingoperation, the synthetic yarn, indicated at 2:": in Figures 4 and 5, iswound on the tubular member T3 with the locking members l5 and i5" inthe position shown in Figure 1, as a result of which the wall 13 of theslot it will bear against the pin 2e and the pivot pin IE will preventthe, walls 12 and 1'3 from "moving towards each other "during theposition shown in Figure 5. The tube is then "placed in an oven forapproximately 30 minutes with a wet bulb temperature of approximately170 F. and a dry bulb temperature of approxi- "mately The yarn thencontracts and causes the tubular member 0 to contract as shown in Figure5 and finally as shown in Figure 6.

The tubular member IE) is provided with notches 26 and 26" at oppositeends thereof which are spaced a predetermined distance from the wall ISof the slot 1"], and it is thus seen in- Fig-u-re 6 that contraction orshrinkage of the yarn will cause the wall 13 to move into engagementwith the pin 2! which is-preferably spaced slightly apart from the walli2. Since the pin 2! is positioned inwardly of the pivot pin 16, thewall is will act as a cam on the pin 2f to thus move the lock memberl ina counterclockwise 'direction from the position shown in Figure 5 tothat shown in Figure 6' to thus cause the pin 2% to move into engagementwith the notch 25- and tothereoy move the lock member it to 'aposition'parallel with the end of the tubular memer it.

It is manifest that the left-hand or free end of the loci; member 15 inFigure 1 must move toward the center-or the tubular member W, as thediameter of thetubular member "decreases during-the contraction of thenylon yarns on the tubular member Ni. Therefore, the tubular member I 9is' provided with" notches 21 and 2"? the inner surfaces of which extendat an angle relative to a line tangent to the periphery of "thetubularmember and these notches aredisposed adjacent the outerw'a'll of the U'shaped members i5 and 1.5 and it will be noted in Figure 3 thatthepiv'ot pin Iii loosely penetrates the wall of the tubular member toso as to permit the member E5 to move inwardly at its 'free end as thediameter or the tubular member I'll decreases. I v I It will be noted inFigure '6 that the pin 2i not only serves to move the, locking member'15 inwardly at its left-'hande'nd, but also serves as a stop member topreventthe walli3 from-moving into engagement with "the wall "P2 of the"Slot H during contraction of the yarn to thus prevent the yarnfrom'being pinched between the Walls !2 and i3.

If thewalls l2 and it were permitted to engage each other, theyarn wouldnot only be damaged, but would also adhere to the 'tubular member I0adjacent the opening II and this would interfere with ther'emoval'oftheyarn -25 from the tubular member "i ii. 7 I 7 It might be stated thatthe'nofch- 26 in the tubular member ii) is not provided as "a means oflocking the tubular member H)- in'acon'tracted position, but is merelyprovided to perm-it the member i5 to be moved to a position parallel tothe end of the tubular member *1?! to thus permit the tubular member ii!to -be"'placed 'on end for storage purposes.

Modified locking means 5 "Referring to Figures "7, 8,9 and 10, there isshown a modified form of the invention comprising a winding or sizingtube it which is identical to the tube 10 in the original form of theinvention. The tube 40 also has a slot ll of predetermined widthextending throughout the length of the tube 40. The slot is defined bywalls 42 and as and, as in the original form of the invention, thesewalls are representative of the Width of the slot and their distanceapart may be varied according to the percentage of elasticity desired inthe yarn to be wound thereon.

A curved guide member 45 is pivotally connected as by a pin 46 to thetubular member 49 adjacent the wall 42 at the upper endof the slot M. Acurved guide member 45', which is identical to the guide member &5 butis the reverse of the guide member 55, is mounted at the lower end ofthe slot 4 l The parts associated with the guide member A5 will bear thesame reference characters as like parts associated with the guide member45 with the prime notation added.

The guide member 16 is preferably U-shaped in cross section and thus.has outer and inner flange portions 34 and M integral therewith whichare adapted to engage the outer and inner Walls of the tubular member Eto thus serve as a guiding means as the walls of the slot 4! movestowards each other during contraction of the yarn, as the locking memberl does in the original form of the invention.

Since the free end of the guide member 45 must move towards the centerof the tubular member 49 upon contraction of the tube, the tubularmember 4a is also provided with a cavity 5| in its periphery adjacentthe pivot pin 56, the bottom of which extends at an angle relative to aline tangent to the periphery of the tubular member. It will be noted inFigure 9 that the pivot pin 46 also loosely penetrates the wall of thetubular member 46 so as to permit the member %5 to move inwardly at itsfree end as the diameter of the tubular member so decreases.

Secured, as by a pressed fit, in the guide member 45 and spanning thedistance between its flanges 4s and til is a transverse pin 54 which ispositioned inwardly relative to the pivot pin 46 toward the opposite endof the tubular member Q0 and is spaced slightly apart from the wall d2of the slot i I' for the'same reason that the pin 2! is so positioned inthe guide member I5 in the original form of the invention.

The curved locking member 25 also has a cut away portion 55 at itsright-hand end in Figures 7 and 9 to permit the guide member 45 to beswungoutwardly if desired. However, it is to be noted that in themodified form of the invention it is not necessary that the guidemembers 45 and 45 be swung outwardly inasmuch as they do not have a pinadjacent their opposite ends engaging the wall 63 remote .from theirpivot points 46 and $6. In fact, if so desired, there may be more thanone pin similar to the pin 46 connecting the member :35 to the tubularmember 40 adjacent the wall 42 of the slot 4| to thus prevent the member45 from being swung outwardly. However, in the instance of more than onepin being used to secure the member 45 to the wall of the tubular member40, any other pin similar to the pin :15 must loosely penetrate the wallof the member 58 to permit the free end of member 45 to move inwardlyupon contraction of the tubular member 40.

Referring to Figures 8 and 9 it may be observed that the walls 42 and 43of slot 41 are beveled so that the slot Mis narrower at theouter surface=1 6 of the tubularmember is than it is at the inner surface of thetubular member 39 and a spacing member 60 whose opposite edges arebeveled to conform to the beveled walls 42 and 33 is adapted to beplaced in the slot ii formed by the walls 5-2 and 43. It will be notedin Figures 7 and 10 that opposite ends of the spacer are notched as at6! and 6 I and the inner flange e8 or" the guide member 45 in Figure 10is cut away as at 62 to permit the narrower upper end of the spacer 86formed by the notch 6! to engage the inner walls of the outer flange l!of the guide member 5 when the spacer 56 is inserted in the slot ilyObviously, the walls 412 and d3 are beveled to provide for ease ofremoval of the spacer 6!) from the slot 4!. I

Since the spacer 6E! engages the inner surfaces of the outer flanges Mand a? of the guide members t5 and 45', respectively, it is thus seenthat the members 45 and 45' prevent the spacer 66 from being movedentirely through the slot 4! in the event that the walls '32 and as arespaced abnormally far apart and to also insure that the outer surface ofthe member $53 will be flush with the outer periphery of the tubularmember 453. The function of the spacer $53 in the slot 5! is verysimilar to the function of the pin 22 in the locking member l5 in theoriginal form of the invention, in that it prevents the walls 32 and 53from being moved towards each other by contraction of the tubular memberis as the yarn is being wound thereon. Since the spacer 69 extends forthe full length of the slot M, the spacer 56 also insures that thecentral portion of the tubular member 39 will not be contracted thusmoving the central'portions of the walls 32 and 5-3 towards each otheralthough their outer ends may be looked, as may be the case in theoriginal form of the invention.

After the yarn has been wound on the tube 28 the tubular member 48 isthen removed from the spindle of the winding machine and the spacer E0is moved inwardly toward the center or axis of the tubular member as andthus is removed from the slot 4|. This will, of course, permit the yarnwound on the tubular member ii] to contract, as in the original form ofthe invention, until the wall 43 of the slot 4| moves intoengagementwith the pins 54 and 54' on the guide members 45 and 45',respectively, thus permitting a predetermined amount of contraction ofthe nylon yarns wound thereon. I

Referring to Figures 11, 12, l3, l4 and 15, there may be observed stillanother modified form of the invention which is very similar to themodified form shown in Figures '7, 8, 9 and 10 and since all of theparts shown in Figures ll to 15,.

inclusive, with the exception of the closing means for the slot in thetubular member, are identical to the parts shown in Figures 7 to 10,inclusive, a further description of these parts will not be given andlike parts in Figures 11 to 14, inclusive, shall bear the same referencecharacters as the parts shown in Figures 7 to 10, inclusive.

In the form of the invention shown in Figures 11 to 15, inclusive, thespacer or closing means for the slot 4! is indicated at 6E-a and isidentical to'the spacer 69 shown in Figures '7 to 10, inclusive', withthe exception that this spacer 59-(L has a hinge member 65 securedthereto as by screws 65 and this hinge member 65 is also secured to theinner wall of the tubular member M! as by screws 67 adjacent the wall 63of the slot 4|. Opposite side edges of the spacer G0--a are 15 beveledto conform to the bevelled walls 42 and accuses .7 43 of thes'lot M asis the case with the spacer BU-shown in Figures 7 to--l0, inclusive.Referring --to Figures ll, 12, 14 and 15, it may be observed howthespacer-fill-a may-be swung'irito position to close the slot M and, in sodoing,-the member -6Ela may'bear against theinner surfaces of theouter-flanges ll and 41 of the guide members 45 and 45, respectively,thus insuring that the spacer'tB-a will be flush at its outer surfacewith the outer periphery of the tubular 'member 40.

When the tubular member 40, as shown in Figures 11 to 15, inclusive, isremoved'from the spindleon which it is mounted during the windi'ngoperation, the spacer GG-a may 'then be swung inwardly as shown inFigurelS to thus permit the walls 112 and d3 of the slot ll to movetowards each other undercontraction of theyarn wound on the tubularmember 4!] until the wall d3 engages the transverse pins 54 and 5 1 inthe guide members 45 and 45. The hinging means for the spacer -Ellashown in Figures 11 to 15,

inclusive, is shown as being'a piano type hinge,

however, this is shown by way of illustration only,

inasmuch as the spacer $0a may be hinged to the side wall 43 0f the slot4! in any-desiredmanner.

Tests have shown that nylon yarns which have been sized ontubes nothaving the slot therein,

such as in the present invention, usually will break when stretched totwelve and one-half percent elasticity, while, for example, with anopening of a width of one inch in a tube having a circumference ofeighteen inches, it has been found that the elasticityof the yarn willbe increased an additional five percent or a total of seventeen andone-half percent. Tests have shown that an additional fourteen percentelasticity is possible with the present invention and in which instancethe widthof theslot I lwould be increased to two and one-half inches.

It is obvious that'byincreasing'the elasticity in the yarn inthe'manner,heretofore described not only the uniformity of elasticity in the'yarnis improved, which would result in straighter seams'in fulliashionedhosiery than have heretofore been possible, but this alsoreduces the snagging'and pull threads in hosiery manufacturing processesas well as 'greatly'increasing the useful life of the hosieryinasmuch'as the increased elasticity'would alleviate the possibleoccurrence of runs in the hose, particularlyinpulling'thehose over onesfoot.

In the Weaving of fabrics'in which nylon warp orfilling yarns are used,yarns are usually not subjected to'a Isizing emulsion. However, whennylon yarns are woven into cloth, unevenness of elasticity of the nylonyarns has often resulted in a fabric of uneven or irregular appearancecaused by stripes extending transversely or in the picks of the fabricand which are generally referred to as bearing andtier marks. Thesemarkshave usually been the result of uneven density in the nylon yarns whichhas caused a slub-like eifect in the yarn.

In order to produce a fabric which does not have the bearing ortier'marks hereinbefore 'referred to, the nylonyarnsis wound on the tubeit in the manner heretofore described with the exception that-the yarnis not necessarily-passed through a sizing emulsion. However, the yarnon the tube I0 is then processed in the manner heretofore described tothus-shrink or contract the yarn -a predetermined amount to thus producein the seaming of nylon hosiery.

8 an even texture and an even elasticityin theyarn throughout .itsentire length.

The present invention is also usefulin the preparation of-nylonsewingthreads, such as is used 'I-leretofore, nylon sewing threads haveusually been placed in skeins and then the skeins with the nylon yarnstherein have been placed in hot or boiling water fora'predeterminedperiod and then dried and wound on spools after which theyarn has been twisted. It is manifest that the present invention willgreatlyreduce the'cost of preparation of nylon sewing threads inasmuchas the yarnmay be wound from the 'pirns, on which it is usually woundwhen received in the processing plant, onto the tube I I! in the mannerheretofore described. The-tube "lfiiis removed from the windin'gma'chine and may be'placed in an oven in the same manner as heretoforedescribed for other synthetic yarns with "the nylon sewing thread woundthereon and with the locking members l5 and I5 moved outwardly to theposition shown in Figure 5 to thus permit the yarn to shrink apredetermined amount. The'yarn may then be dried while it is still onthetubular member Ill and may be unwound on the twisting frame whilestill on th tube is or it may be wound from tube lb ontosuitable spoolsfor placing on a twister frame. This eliminates the skeins as well asthe necessity of subjecting the sewing thread to hot or boiling water.This latter process also provides a better sewing thread than hasheretofore been possible-inasmuch as the sewing thread, when placed inthe skeins, quite'often becomes entangled with other packages or bunchesof nylon yarns, thus resulting in the yarn'becoming severed in variousplaces along its length and also interfering with a possibleuniformity-of elasticity throughout its length.

The'present method of treating synthetic arns used in manufacturing fullfashioned hosiery contracts the yarn in such a manner that the over-alllengths of seamed hosiery maybe uniformprior to and after subjecting thehose, While on forms, to 'a heat treatment so as to set the hose to holdits shape. This operation is usually referred't'o as pie-boarding.Heretofore, uneven elasticityin the yarn-used in hosiery has causedthehose to varyup to two inches in length after "pre b'oarding while allthe hose-in a particular group may have been exactly the same lengthprior to pre-boarding.

In the drawings and specification there has been set forth a preferredembodiment of the invention, and although specific terms are employed,they are used in a generic and descrip- "allow movement "of the walls ofsaid slot toward each othcr'upon contraction of the yarn disposed onsaid tube, said tube also being provided with other means for limitingmovement of the walls of said slot toward each other after thefirstnamed means has been adapted to allow movement of theedges of saidopening towardeach 7 other. 7

yarns saturated with a sizing emulsion wound thereon, said sizing tubehaving a slot extending throughout the length of the tube, locking meanspivotally connected to the sizing tube adjacent on side of the slot andspanning the slot and having stop means for normally preventing thewalls of said slot from movingtoward each other under contraction of thesynthetic yarns as they are wound thereon, the locking means beingmovable out of locking position to thereby permit the walls of the slotto move toward each other after the yarn has been wound on the tube anddue to contraction of the yarn, said tube having a cavity in-its outersurface adjacent the pivoted end of the locking means, the bottom ofsaidcaV- ity extending at an angle relative to a line tangent to theperiphery of the tube, whereby, upon the stop means being moved frombetween said walls, the locking means may move inwardly at its free endtoward the axis of the tube during contraction of the tube.

3. A tubular member adapted to have synthetic yarns wound thereon, saidtubular member having a slot extending throughout the length of thetubular member, a locking member substantially U-shaped in cross-sectionadapted to be mounted on opposite ends of the tubular member and to spanthe width of said slot, each of said U-shaped locking members havingmeans for preventing the walls of the slot from moving towards eachother during the winding of synthetic yarn thereon, the locking membersbeing movable to another position to thus permit the walls of the slotin the tubular member to move toward each other during shrinkage of theyarn carried thereby to thus increase the elastic limits of the yarn.

4. A winding tube adapted to have synthetic yarns wound thereon, saidwinding tube having a slot extending throughout the length of the tube,guide members spanning the ends of said slot and being connected to thetube adjacent one of the walls of said slot, a spacer member adapted tobe inserted in said slot and extending substantially from one endthereof to the other and means on the guide members for supporting theopposite ends of the said spacer and to prevent said spacer fromprojecting beyond the outer periphery of the tube whereby the spacer maybe inserted in the slot during a winding operation to preventcontraction of the tube and whereby the spacer may be removed from thesaid slot following the winding operation to permit contraction of thetube, the said guide members serving to insure that the walls of theslot shall remain in al nement with each other during contraction of thetube.

5. A winding tube adapted to have synthetic yarns wound thereon, saidwinding tube having a slot extending throughout the length of the tube,guide members adapted to close opposite ends of said slot, said guidemembers being substantially U-shaped in cross section and being securedat one end to the tube adjacent one of the walls of said slot, the otherend of the guide member being adapted to slidably engage the tubeadjacent the other wall of the slot, the inner flanges of said guidemembers being partially cut away, a spacer of substantially the samelength as the tube and being hingedly connected to one of the walls ofsaid slot and also being adapted to swing inwardly, the free edge ofsaid spacer being adapted to engage the other wall of said slot, theopposite ends of said spacer also being adapted to engage the innersurfaces of the outer flanges of the guide members to thus pre- 1O ventthe spacer from projecting beyond the outer periphery of the tube duringa winding operation and whereby the spacer may be swung inwardlyfollowing the winding operation to thereby permit the walls of the slotto move towards each other due to contraction of the yarn.

6. A winding tube adapted to have synthetic yarns wound thereon, saidwinding tube having a slot extending throughout the length of the tube,guide members adapted to close opposite ends of said slot, said guidemembers being substantially U-shaped in cross section and being securedat one end to the tube adjacent one of the walls of said slot, the otherend of the guide member being adapted to slidably engage the tubeadjacent the other wall of the slot, the inner flanges of said guidemembers" being partially cut away, a spacer of substantially the samelength as the tube and being hingedly connected to one of the walls ofsaid slot and also being adapted to swing inwardly, the free edge ofsaid spacer being adapted to engage the other wall of said slot, theopposite ends of said spacer also being adapted to engage the innersurfaces of the outer flanges of the guide members to thus prevent thespacer from projecting beyond the outer periphery of the tube during awinding operation and whereby the spacer may be swung inwardly followingthe winding operation to thereby permit the walls of the slot to movetowards each other due to contraction of the yarn, each of said guidemembers having a transverse pin therein adapted to be engaged by thewall of' the slot remote from the end of the guide members secured tothe tube to thereby restrict movement of the walls of the slot towardseach other to allow a predetermined amount of contraction of the yarn ona particular tubeaccording to the amount of electricity desired in theyarn.

7. A tubular member onto which yarn is adapted to be wound, saidtubular'member having a slot in its wall extending throughout the lengthof the periphery of the tubular member, means preventing contraction ofthe tubular member during a winding operation, said means being movableto allow the tension of the yarn thereon to contract the tubular member.

8. A sizing tube adapted to have synthetic yarns wound thereon, saidsizing tube having a slot extending throughout the length of theperiphery of the tube, locking means pivotally con nected to the sizingtube adjacent one side of the slot and spanning the slot and having stopmeans for normally preventing the walls of said slot from moving towardeach other under contraction of the synthetic yarns as they are woundthereon, the locking means being movable out of locking position tothereby permit the walls of the slot to move toward each other after theyarn has been wound on the tube and due to contraction of the yarn, saidtube having a cavity in its outer surface adjacent the pivoted end ofthe locking means, the bottom of said cavity extending at an anglerelative to a line tangent to the periphery of the tube, whereby, uponthe stop means being moved from between said walls, the locking meansmay move inwardly at its free end toward the axis of the tube duringcontraction of the tube.

9. A tubular member adapted to have synthetic yarns saturated withsizing solution, wound there-1 on, said tubular member having a slotextending throughout the length of the periphery of the tubular member,locking members substantially U-shaped in cross-section adapted to bemounted 255415283 131 1 2 one on :each z-end :nf the tubular: member and51:0 REFERENCES .CITED spanzth'ewidthzofssaid slot, eaohnflsaidU-:shaped ,Thefonowmg references are ofrecordin file locking .membershaving means for preventing file of this patent, the walls ,of' thehaslotzfmm :moving towards reach otherduringtthewindingcofsyntheticyarnthene: 5 UNITED STATES PATENTS on, the lockingmembensmemgmovableito an- Number @Name m othe; v:pnsition to thus permitdahe wal'ls of the 1 7 17 Gmuer Man 5 7 sk1t:m:.the 'iubmanmemhertosmove itowardaeazch v v other duringashrinkzgegofihezyarnmarriedthere- FOREIGN PATENTS byto' thus..increaseztheielasticzlimitsczfitheyam. 10 Number Country Date G. YLI-IENDRIX. 5402,2618 reatBritain iNOv, 30, I933 Certificate of Correction Patent No. 2,541,963 7February 13, 1951 PALMER G. HENDRIX It is hereby certified that errorappears in the printed specification of the above numbered patentrequiring correction as follows:

Column 10, line 39, for electricity read elasticity;

and that the said Letters Patent should be read as corrected above, sothat the same may conform to the record of the case in the PatentOflice.

Signed and sealed this 1st day of May, A. D. 1951.

THOMAS F. MURPHY,

Assistant C'ommissz'oner of Patents.

